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CVE-2026-86145

Quick assessment

Affected
PCRE PCRE2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

pcre pcre2是pcre团队开源的一款正则表达式库。 pcre pcre2 10.48之前版本存在权限许可和访问控制问题漏洞，该漏洞源于pcre2_dfa_match函数在递归DFA匹配工作区中重用缓存的工作区块时缺少大小检查，可能导致越界写入。

CVSS 8.2 · High EPSS 0.39% · P32

Affected Version Matrix 1

VendorProduct Version RangeStatus
PCRE PCRE2 10.32< 10.48 affected
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I. Basic Information for CVE-2026-86145

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
PCRE2 before 10.48 allows a pcre2_dfa_match out-of-bounds write because reuse of a cached workspace block, in a recursive DFA matching workspace, lacks a size check (even though a newly allocated block, for the same purpose, does have a size check). This outcome requires an attacker-controlled regular expression, or a recursive pattern in conjunction with a small heap limit (this can be set through the API).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对候选路径的不恰当保护
Source: CVE Program / CVE List V5
Vulnerability Title
pcre pcre2 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pcre pcre2是pcre团队开源的一款正则表达式库。 pcre pcre2 10.48之前版本存在权限许可和访问控制问题漏洞，该漏洞源于pcre2_dfa_match函数在递归DFA匹配工作区中重用缓存的工作区块时缺少大小检查，可能导致越界写入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
PCRE PCRE2 10.32 ~ 10.48 -

II. Public POCs for CVE-2026-86145

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III. Intelligence Information for CVE-2026-86145

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Vendor Advisories for CVE-2026-86145 (1)

Vendor Pages for CVE-2026-86145 (1)

IV. Related Vulnerabilities

Same product: PCRE2
Same vendor: PCRE
Same weakness: CWE-424

V. Comments for CVE-2026-86145

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